165585468918 has 16 divisors (see below), whose sum is σ = 333153999360. Its totient is φ = 54864646056.

The previous prime is 165585468911. The next prime is 165585468931. The reversal of 165585468918 is 819864585561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165585468911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82626478 + ... + 82628481.

It is an arithmetic number, because the mean of its divisors is an integer number (20822124960).

Almost surely, 2^165585468918 is an apocalyptic number.

165585468918 is an abundant number, since it is smaller than the sum of its proper divisors (167568530442).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165585468918 is a wasteful number, since it uses less digits than its factorization.

165585468918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165255131.

The product of its digits is 82944000, while the sum is 66.

The spelling of 165585468918 in words is "one hundred sixty-five billion, five hundred eighty-five million, four hundred sixty-eight thousand, nine hundred eighteen".